Analysis of the similarity of characteristics of quadcopter engines based on the results of bench tests

The similarity of engine characteristics is an important factor in the controllability and stability of the operation of mini-unmanned aerial vehicles (UAVs). The coordinated operation of engines with different characteristics is ensured by the flight controller, through commands sent to the speed controller of each engine. The selection of commands based on the characteristics of individual engines requires the expenditure of computing resources of the flight controller, which negatively affects the controllability and stability of the mini-UAV. Because of this, the selection of engines with similar characteristics is a factor that increases the controllability and stability of mini-UVs. A method for quantifying the degree of similarity of engine characteristics based on the results of bench tests is proposed, based on solving the inverse problem of determining the distribution law of a random argument function. The method is fully formalized, which makes it possible to implement a software product based on it, which can be used as a functional component in bench testing systems for both individual engines and mini-UVs. Promising bench-testing tasks have been identified, the solution of which is possible based on the developed method.